Granite is a felsic or acidic rock. A vesicle is a cavity formed by expanding gas during the cooling of an extrusive igneous rock. A good example of vesicles are those found in pumice. If a vesicle is filled in by a secondary mineral it is described as an amygdale.
InformAfrica â Kisii County is a district in the Nyanza Province of southwestern Kenya, and is mostly inhabited by the Gusii tribe or Kisii people. Kisii is the capital town of Kisii county. As of 2010, Kisii county has 7 constituencies which are: Bobasi, Bonchari, Bomachoge, Kitutu Chache, Nyaribari Chache, Nyaribari Masaba, and South Mugirango.
Based on the Census figures of 2009, they can be divided as follows: Kikuyu 22% Luhya 14% Luo 13% Kalenjin 12% Kamba 11% Kisii 6% Meru 6% Other Africa n 15% Non-Africa n (Asia n Europe an, and Arab) 1%. Kenya's population is very diverse and home to most of Africa 's linguistic and ethnoracial groups.